import 'package:get/get.dart';
import '../models/announcement_response.dart';
import '../services/api_service.dart';
import '../utils/api_urls.dart';

class AnnouncementController extends GetxController {
  final ApiService _apiClient = ApiService();
  RxList<Announcements> announcementsList = <Announcements>[].obs;
  RxBool isLoading = false.obs;
  RxBool hasMoreData = true.obs; // To check if there are more pages to load
  RxInt currentPage = 1.obs; // To track the current page

  @override
  void onInit() {
    super.onInit();
    getAnnouncements(); // Fetch announcements when the controller initializes
  }

  Future<void> getAnnouncements({int page = 1, int rowsPerPage = 5}) async {
    if (!hasMoreData.value) return; // Return if no more data is available

    isLoading.value = true; // Set loading to true while fetching
    try {
      final response = await _apiClient.get(
        "${ApiUrls.announcementUrl}?page=$page&rowsPerPage=$rowsPerPage",
      );

      if (response.statusCode == 200) {
        final List<dynamic> data = response.data['announcements'];
        AnnouncementResponse res=AnnouncementResponse.fromJson(response.data);

        // If the fetched data length is less than rowsPerPage, it means no more data
        if (data.length < rowsPerPage) {
          hasMoreData.value = false;
        }

        final newAnnouncements = data.map((item) => AnnouncementResponse.fromJson(item)).toList();

        // If it's the first page, replace the list; else append to the existing list
        if (page == 1) {
          announcementsList.value =res.announcements??[];
        } else {
          announcementsList.addAll(res.announcements??[]);
        }

        // Update the current page
        currentPage.value = page;
      } else {
        Get.snackbar('Error', 'Failed to fetch announcements: ${response.statusCode} - ${response.statusMessage}');
      }
    } catch (e) {
      Get.snackbar('Error', 'Failed to fetch announcements: $e');
    } finally {
      isLoading.value = false; // Ensure loading is set to false in the finally block
    }
  }

  void loadMoreAnnouncements() {
    if (hasMoreData.value) {
      getAnnouncements(page: currentPage.value + 1); // Load the next page
    }
  }
}